Judging from the mechanism of water flow in a channel, generally there are two types of flow, namely flow in an open channel and flow in a closed channel. Explain at least 5 different characteristics (definition, concept, type, function, and energy source) of the two types of flow!

Visualize that two tributaries A and B at their confluence form a river C. Statistical properties of flow data for tributaries A and B indicate that tributary A has a yearly discharge rate smaller than its mean (e) flow rate (QA) in 50% of the years while tributary B has a yearly discharge rate smaller than its mean flow rate (QB) in 60% of the time. In 70% of the years in which tributary A has a discharge rate smaller than its mean discharge rate (QA), tributary B also has a discharge rate smaller than its mean discharge rate (QB). Compute the probability that (i) both tributaries have a discharge rate smaller than their mean discharge rates, (ii) at least one tributary has a discharge rate smaller than its mean discharge rate, (iii) tributary A has a discharge rate smaller than its mean discharge rate given that tributary B has a discharge rate smaller than its mean discharge rate, (iv) at least one tributary has discharge rate higher than its mean discharge rate, and (v) probability…

a) Describe the hydrologic cycle. Where is water found and stored on the planet Earth? How does it move between storage locations?

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